Question

A deuterium (an isotope of hydrogen) nucleus (mass = 2.01355 amu) is made up of one proton (mass = 1.007276 amu) and one neutron (mass = 1.008665 amu). Which statement best describes what happens when a deuterium nucleus forms?​

Answer 1

Answer: Deuterium is a stable isotope of hydrogen, which, unlike “normal” hydrogen atoms, or protium, also contains a neutron. The isotope deuterium has one proton, one neutron and one electron. One out of 6420 hydrogen atoms, on average, is a deuterium isotope.

Explanation: Deuterium is an isotope of hydrogen that is composed of one proton, one neutron, and one electron. The nucleus of deuterium is composed of a proton and a neutron. The symbol for deuterium is given as 2H. The atomic number of deuterium is 1 and the mass number is 2.